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You can either select a value from the drop down list, or you can enter a value in
Maximum frequency in the Collection Specification dialog box. If you enter a
value that does not match one of the values above, the Emonitor software uses the
next higher maximum frequency.
Measurement Resolution
The measurement resolution is part of the collection specification (Setup >
Collection). See
Collection Specification Dialog Box on page
Select the collection specification when you set up the measurement definition.
The Emonitor software and the Dynamix 2500 data collector support these
resolutions.
Table 23 - Measurement Resolutions
Spectral Lines
100
200
400
800
1600
3200
6400
12,800
(1)
25,600
(1) The Emonitor software does not currently support 25,600 spectral lines and will
not upload this data.
(2) The data collector is able to take the time samples Offroute but will not upload the
data to the Emonitor software.
The values that appear in the Number of lines drop down list in the Collection
Specification dialog box are those for spectrum measurements. The Emonitor
software uses the corresponding number of time samples from the table above for
time measurement definition.
You can calculate the number of time samples from the number of spectral lines
using this formula.
You can calculate the total time required to collect a time waveform measurement
from the Number of lines value and the Maximum frequency value in the
Collection Specification dialog box (Setup > Collections).
Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
Setting Up Measurements
Time Samples
256
512
1024
2048
4096
8192
16,384
32,768
(2)
65536
time samples
=
spectral lines 2.56
Chapter 3
75.
79
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